Room ventilating unit



Sept. 26, 1961 J. c. PROCTER ROOM VENTILATING UNIT Filed Aug. 1, 1958 /-v/v TOR JAMES C. PROG TEA wam A r TORNE Y United States Patent 3,002,078 I ROOM VENTILATING UNIT James C.Procter, Cumberland, Ind. Filed Aug. 1, 1958, Ser. No. 752,489

2 Claims. .(Cl. 219-34) This invention relates to a device for inducing a flow of air from the outside at a window to the inside of the room under the influence of applied heat.

A primary purpose of the inventionis to provide a unit which will have no fans with their attendant noises.

a unit at a relatively low cost of production and also easily applied without having to alter any of thewindow construction.

These and many other objects and advantages of the invention will become apparent to those versed inthe art in the following description of one particular form of the invention as now best known to me, as illustrated in the accompanying drawing, in which FIG. 1 is a view in inside perspective of a lower por- 7 tion of a window frame and sashes; and

' FIG. 2 is a view on an enlarged scale on the line 22 in FIG. 1. 1 g

The invention is shown herein as being applied to a conventional window wherein there is an upper sash 10; a lower sash 11; a window sill 12; and the usual and customary inner window trim 13, all as viewed from the inside of the window.

A conduit generally designated by the numeral 14 is formed to extend across from one side to the other of the lower portion of the sash 11, the sash 11 being raised to have its lower rail 15 at the upper edge 16 of the conduit, the conduit 14 herein being shown as rectangular in cross-section. V l

A vertical column 17 rises from one end of the conduit 14 and a like column 18 rises from the other end of the conduit 14, these columns 17 and 18 having a full opening at their'lower ends into the conduit 14. The upper ends of the columns 17 and 18 are provided with openings 19 each at their upper ends, these upper ends being located a slight distance above the upper rail 20 of the sash 11. The upper sash 10 remains in its normal upper position, that is in the closed position, and since the lower sash 11 is raised slightly as indicated, there will be a'gap between the glass 21 and the upper rail 20, and this gap is filled in by an insulating strip 22.

At the lower end of each of the columns 17 and 18, there is mounted on the floor of the transverse conduit 14 a heating element 23 and .24 respectively, these ele: ments being of the usual and well known conical, porcelain bodied type with an electrical heating unit in the form of a coil 25 wrapped externally therearound. Cables 26 and 27 lead respectively from each of the units 23 and 24 to be connected to any desired source of electric current.

There is a chamber 28 formed centrally in the conduit 14 by means of transverse partitions 29' and 30 extending sealably across the inside of the conduit 14. Between these partitions 29 and 30, there is a damper door 31 hinged from its top by the hinge 3 2, FIG. 2, to have the door 31 normally swing downwardly on the hinge 32 so that the damper door 31 normally hangs vertically downwardly to form a closure of the chamber 28 in the outer side wall 33 of the conduit 14. Louvers 34 are provided in the opposite side wall 35 of the conduit 14.

w IC

Both the walls 33 and 35 are the vertical walls of the conduit.

, The outer wall 33 is provided on each side of the chamber 28, that is on each side of the partitions 29 and 30, with openings in the form of louvers 36.

Operation In operation, the units 23 and 24 are energized, either simultaneously or one at a time depending upon the nature of the weather, particularly as to its temperature and wind direction. Assuming both units 23 and 24 are to be energized, the air within the columns 17 and 18 becomes heated, and consequently rises to discharge through the openings 19. As this heated air automatically rises inthe columns 17 and 18 and discharges into the room space, air is drawn in from the outside through the louvers 36, so that fresh air is carried in opposite directions in the conduit 14 across these heating units 23 and 24 and thence upwardly through the columns 17 and 18 into the room.

This induction of air into the room by means of the heating of the air in the columns 17 and 18 tends to set up a slight pressure in the room, and this pressure is relieved by the air flowing outwardly through the louvers 34 tending to rock the damper door 31 open so that that air may discharge into the-atmosphere under the rail 15 of the sash 11.

Thus it is to be seen that a circulation of air is had, and this circulation will take in the larger part of the room in which the window appears by reason of the fact that the heated air is discharged vertically upwardly whereas the escaping air travels horizontally below the column 7 discharge openings 19.

While the air is heated in both of these columns .17

and 18, the application of heat may be controlled by the degree of energization of either or both of the units 23 and 24 so that the air entering the room is not unduly heated, particularly in the warmer months of the year. On the other hand, the air may be heated considerably when so desired all depending upon the energy applied to the units 23 and 24, and also of course upon the sizes of those units.

Therefore it is to be seen that I have provided an exceedingly simple and yet most effective device for inducing a change of air in a room, withouthaving to employ fans 'or other moving devices. The entire operation is set up and maintained by convection currents induced by the application of heat in the columns 17 and 18. 7

Thus, while I have herein shown and described my invention in the one particular form, it is obvious that structural changes may be employed without departing from the spirit of the invention, and I therefore do not desire to be limited to that precise form beyond the limitations which may be imposed by the following claims.

I claim:

.l. A room ventilator device forapplication to an installed window frame having vertical side members be tween which is carried a sash vertically shiftable from a sill or stool, comprising a horizontal conduit extending across the frame on the stool and in sliding contact with the sash room side when shifted from and to said stool; said conduit having an approximately central zone closed oil from the conduit on either side thereof and opening to both the room and sash sides; a damper across one of said zone openings; said conduit having two spaced apart side openings on its sash side outside of said zone, the zone being intermediate said conduit side openings; a vertical side conduit extending upwardly from each end of said horizontal conduit and along said frame members and terminating by open ends above the top of said sash;

said horizontal conduit opening by its end portions respectively into said vertical conduits; and an electrical heating element at the lower ends of said side conduits; said sash in its lowered, closed position closing ofi all three of said horizontal conduit openings, the sash being raised to have its bottom edge approximately to the top of said horizontal conduit for full openingof said 5 horizontal conduit openings.

2. The structure of claim 1' in which said damper comprises a door hanging freely downwardly across said zone,

and opening upon room air pressure exceeding that of the outside air pressure, heated air rising in and dischargm ingfrom said side conduits to increase room pressure.

References Cited in the file of this patent UNITED STATES PATENTS 

